[PATCH RESEND] wifi: mt76: mt7996: fix NULL pointer dereference in mt7996_mcu_sta_bfer_he

[Ma Ke]

Fix the NULL pointer dereference in mt7996_mcu_sta_bfer_he
routine adding an sta interface to the mt7996 driver.

Found by code review.

Cc: stable at vger.kernel.org
Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Ma Ke <make24 at iscas.ac.cn>
---
 drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index 2e4fa9f48dfb..cba28d8d5562 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -1544,6 +1544,9 @@ mt7996_mcu_sta_bfer_he(struct ieee80211_sta *sta, struct ieee80211_vif *vif,
 	u8 nss_mcs = mt7996_mcu_get_sta_nss(mcs_map);
 	u8 snd_dim, sts;
 
+	if (!vc)
+		return;
+
 	bf->tx_mode = MT_PHY_TYPE_HE_SU;
 
 	mt7996_mcu_sta_sounding_rate(bf);
-- 
2.25.1